Squawk Box

March 1999 Issue

Errant Ailerons

7,500 Mooneys need inspection for cracked aileron control link

The pilot of an M20J noticed sloppy aileron response and observed the right aileron vibrating and not responding to control inputs. The pilot landed safely.

Technicians found the right control link rod assembly had cracked at a factory weld and then through the tubing weld. The break along the weld showed signs of age, while the break in the tubing looked more recent.

There was no indication that the ailerons had been subject to abuse, and the technician noticed that the replacement part was identical except that reinforcing gussets had been added at both 90-degree corners in the link.

Another incident, also in an M20J, had the same characteristics, leading the FAA to issue AD 98-...

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